Rectifier compound



Sept. 10, i929. F. H. MACKENZIE RECTIFIER COMPOUND Filed Apxil l2 1926 ALUMINUM SOLUTION CONTAINS MONOBAIC AMMDNIUM PHOSPHATE AND I I/ID AGETIITE mf'VEwoR. FRANKLIN H, MACKENZIE.

ATTORNEY.

Patented Sept. 10, 1929.

uNirEo srTI-:sg PATENT FRANKLN H. MACKENZE, E PELADELPEIA, PENNSYLVANIA,.ASSIGNOR OF ONE- lHALF TO MUNSN E. LANE, @F WASHTNGTGN, DXSTRICT 0F COLUMBI.

ancrrrma conectan.

Application med April 12,

The invention relates to electrolytic rectiiers and more particularly to a composition of matter for use as an electrolyte in an electrolytic rectifier cell. The invention may be in about the proportions of three (3) parts by weight of the ammonium phosphate to one (1) of the lead acetate. These proportions may be varied somewhat, but tor best results they should be maintained approximately. rlhe above ingredients are preferably mixed dry and placed in the bottom of the rectifier cell as at 13, which is then filled with water to the level 14. The composition does not completely dissolve in the Water at once, but sufficient reaction takes place to supply a substantially constant voltage when the-rectifier is in operation. rlhe electrodes should extend a substantial distance into the. electrolytic solution but should not extend into the undissolved compound at the bottom of the cell.

u l am aware that ammonium phosphate has been used in rectifier ce1ls,`but l find that with the addition of the' lead acetate in about the proportions specified l am able to secure t-he advantages of greater voltage, quicker action,

more constant flow 'of current and longer life than with any compound previously known .to me.

While I prefer monobasic ammonium phosphate and lead acetate, it is obvious that equivalents may be employed, as :tor example, ammonium acetate and lead phosphate.

What I claim is 1. An electrolyte for use in electrolytic rectifiers comprising an aqueous solution of ammonium phosphate and lead acetate.

2. An electrolytic cell having a positive electrode of aluminum and a negative elec- ESSG. Serial No. 101,575.

trotle of lead, submerged in an aqueous solution of lead acetate and ammonium phosphate.

3. An electrolyte for use in electrolytic rectifiers containing. monobasic ammonium phosphate and lead acetate.

4f. An electrolyte for use in electrolytic rectifiers containing the ammonium, phosphate, lead and acetate radicals. p

'5. An electrolyte for use in electrolyte rectiiiers comprising an aqueous solution of monobasic ammonium phosphate and lead acetate in substantially the proportions of three parts of the former to one part of the latter. v

lln testimony Wliereofl affix my signature.

manutan H. MacKenzie. 

